Indirect tax collections rose marginally by 7.1 per cent in the April-November period to over Rs3.28 lakh crore, mainly on account of increase in revenue from service tax and customs.However, excise collection, which is an indication of economic activity, declined by 0.2 per cent during the eight months period to Rs1,02,762 crore, an official statement said.Indirect tax collections so far this fiscal have been 52.7 per cent of the budget target of 2014-15, it added.